The RBN has been described by VeriSign as "the baddest of the bad". It offers web hosting services and internet access to all kinds of criminal and objectionable activities, with individual activities earning up to $150 million in one year. Businesses that take active stands against such attacks are sometimes targeted by denial of service attacks originating in the RBN network. RBN has been known to sell its services to these operations for $600 per month. (Wikipedia entry)

This list is a snapshot of sites serving malware or strongly suspected of being involved with malware. It dates from June 1st 2011 and can be found at

If for any reason the site is unavailable a copy of the list is appended here. If you come across a url or IP address that appears to be linked to a PC infection, look here to see if it is listed - some of the entries contain additional information about the type of malware exploit that the site delivers. See the excerpt below for a few examples.